US WA: State Sees No Spike In Pot Use In Tests

Seattle Times, 07 Feb 2013 – OLYMPIA, Wash. (AP) – The state toxicologist says she hasn’t seen a spike in positive blood tests for marijuana since pot became legal under Washington law. Voters last fall passed Initiative 502, allowing adults over 21 to possess up to an ounce of marijuana. The measure, which took effect Dec. 6, set a driving-under-the-influence limit designed to be similar to the .08 blood-alcohol content for drunken driving – 5 nanograms of active THC per milliliter of blood.